167 search results - page 9 / 34 » On the provenance of non-answers to queries over extracted d... |
PVLDB
2010
13 years 6 months ago
2010
Recently, there has been increasing interest in extending relational query processing to include data obtained from unstructured sources. A common approach is to use stand-alone I...
IRI
2009
IEEE
14 years 2 months ago
2009
IEEE
Formulating and executing queries over distributed, autonomous and heterogeneous resources is an important research area. The advent of the Internet and the Web and their inherent...
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
Searching and extracting meaningful information out of highly heterogeneous datasets is a hot topic that received a lot of attention. However, the existing solutions are based on e...
IDEAS
2002
IEEE
14 years 24 days ago
2002
IEEE
A system has been developed permitting database queries over data extracted from a CAD system where the query result is returned back to the CAD for visualization and analysis. Th...
PODS
2004
ACM
14 years 8 months ago
2004
ACM
We present the Lixto project, which is both a research project in database theory and a commercial enterprise that develops Web data extraction (wrapping) and Web service definiti...